Thread (14 messages) 14 messages, 2 authors, 2022-01-05
STALE1610d LANDED
Revisions (3)
  1. v1 [diff vs current]
  2. v2 [diff vs current]
  3. v3 current

[PATCH v3 03/12] dmaengine: at_xdmac: Print debug message after realeasing the lock

From: Tudor Ambarus <hidden>
Date: 2021-12-15 11:01:40
Also in: dmaengine, lkml
Subsystem: dma generic offload engine subsystem, microchip at91 dma drivers, the rest · Maintainers: Vinod Koul, Ludovic Desroches, Linus Torvalds

It is desirable to do the prints without the lock held if possible, so
move the print after the lock is released.

Fixes: e1f7c9eee707 ("dmaengine: at_xdmac: creation of the atmel eXtended DMA Controller driver")
Signed-off-by: Tudor Ambarus <redacted>
---
 drivers/dma/at_xdmac.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c
index c3d3e1270236..7d3560acedbb 100644
--- a/drivers/dma/at_xdmac.c
+++ b/drivers/dma/at_xdmac.c
@@ -473,10 +473,12 @@ static dma_cookie_t at_xdmac_tx_submit(struct dma_async_tx_descriptor *tx)
 	spin_lock_irqsave(&atchan->lock, irqflags);
 	cookie = dma_cookie_assign(tx);
 
-	dev_vdbg(chan2dev(tx->chan), "%s: atchan 0x%p, add desc 0x%p to xfers_list\n",
-		 __func__, atchan, desc);
 	list_add_tail(&desc->xfer_node, &atchan->xfers_list);
 	spin_unlock_irqrestore(&atchan->lock, irqflags);
+
+	dev_vdbg(chan2dev(tx->chan), "%s: atchan 0x%p, add desc 0x%p to xfers_list\n",
+		 __func__, atchan, desc);
+
 	return cookie;
 }
 
-- 
2.25.1


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